北京体育大学学报
北京體育大學學報
북경체육대학학보
Journal of Beijing University of Physical Education
2014年
10期
71~76
,共null页
HiHiLo 血液流变性 血液粘度 红细胞变形能力
HiHiLo 血液流變性 血液粘度 紅細胞變形能力
HiHiLo 혈액류변성 혈액점도 홍세포변형능력
HiHiLo; hemorheology; blood viscosities; red cell deformability
目的：观察4周HiHiLo对女子跆拳道运动员安静及定量负荷后血液流变学特征的影响,探讨HiHiLo提高有氧能力的可能机制。对象和方法：8名国家跆拳道女子运动员,在模拟海拔2 500 m的低氧环境下HiHiLo4周。观察HiHiLo前、3 d、4周后安静状态及定量负荷后血液流变性、运动能力的变化。结果：4周HiHiLo后,4 000 m跑和PWC170成绩有显著提高（P〈0.01）;安静状态下,各切变率血液粘度显著低于HiHiLo前,红细胞变形能力显著提高;定量负荷后,HiHiLo4周后,高、中、低切变率下,只有低切的血液粘度显著低于HiHiLo前（P〈0.05）,红细胞变形能力显著高于HiHiLo前（P〈0.05）。急性低氧（3d）,各指标与HiHiLo前后均无显著性差异。结论：4周HiHiLo能够显著提高受试者的运动能力。HiHiLo4周后,安静状态下血液流变学发生了适应性改变;定量负荷后,低切变率血液粘度和红细胞变形能力的适应性改善有利于微循环的有效灌注。血液流变性的适应性改变可能是HiHiLo提高运动能力的机制之一。急性低氧暴露不能改善血液流变性。
目的：觀察4週HiHiLo對女子跆拳道運動員安靜及定量負荷後血液流變學特徵的影響,探討HiHiLo提高有氧能力的可能機製。對象和方法：8名國傢跆拳道女子運動員,在模擬海拔2 500 m的低氧環境下HiHiLo4週。觀察HiHiLo前、3 d、4週後安靜狀態及定量負荷後血液流變性、運動能力的變化。結果：4週HiHiLo後,4 000 m跑和PWC170成績有顯著提高（P〈0.01）;安靜狀態下,各切變率血液粘度顯著低于HiHiLo前,紅細胞變形能力顯著提高;定量負荷後,HiHiLo4週後,高、中、低切變率下,隻有低切的血液粘度顯著低于HiHiLo前（P〈0.05）,紅細胞變形能力顯著高于HiHiLo前（P〈0.05）。急性低氧（3d）,各指標與HiHiLo前後均無顯著性差異。結論：4週HiHiLo能夠顯著提高受試者的運動能力。HiHiLo4週後,安靜狀態下血液流變學髮生瞭適應性改變;定量負荷後,低切變率血液粘度和紅細胞變形能力的適應性改善有利于微循環的有效灌註。血液流變性的適應性改變可能是HiHiLo提高運動能力的機製之一。急性低氧暴露不能改善血液流變性。
목적：관찰4주HiHiLo대녀자태권도운동원안정급정량부하후혈액류변학특정적영향,탐토HiHiLo제고유양능력적가능궤제。대상화방법：8명국가태권도녀자운동원,재모의해발2 500 m적저양배경하HiHiLo4주。관찰HiHiLo전、3 d、4주후안정상태급정량부하후혈액류변성、운동능력적변화。결과：4주HiHiLo후,4 000 m포화PWC170성적유현저제고（P〈0.01）;안정상태하,각절변솔혈액점도현저저우HiHiLo전,홍세포변형능력현저제고;정량부하후,HiHiLo4주후,고、중、저절변솔하,지유저절적혈액점도현저저우HiHiLo전（P〈0.05）,홍세포변형능력현저고우HiHiLo전（P〈0.05）。급성저양（3d）,각지표여HiHiLo전후균무현저성차이。결론：4주HiHiLo능구현저제고수시자적운동능력。HiHiLo4주후,안정상태하혈액류변학발생료괄응성개변;정량부하후,저절변솔혈액점도화홍세포변형능력적괄응성개선유리우미순배적유효관주。혈액류변성적괄응성개변가능시HiHiLo제고운동능력적궤제지일。급성저양폭로불능개선혈액류변성。
The purpose of this study is to observe the effect of 4- week HiHiLo on hemorrheology changes in quiet state and after fixed load exercise. Methods： Eight female taekwondo athletes coming from national team participated in 4- week HiHiLo which was simulated plateau environment at an elevation of 2500 meters. Blood viscosity and red cell deformability were observed before HiHiLo,3- day HiHiLo,quite state after 4- week HiHiLo,and after fixed load exercise. Results： 4000 m and PWC170 performances are improved after 4- week HiHiLo（P〈0.01）. In quiet state after HiHiLo,blood viscosity is lower than before while red cell deformability is higher than before. After fixed load exercise,low shear rate of the blood viscosity after HiHiLo is lower than before（ P〈0.05）,and red cell deformability after HiHiLo is higher than before（P〈0. 05）. After 3- day HiHiLo,all indicators haven＇t changed after HiHiLo. Conclusions： Four-week HiHiLo can improve athletes＇ exercise ability. Fourweek HiHiLo changes hemorheology in quiet state. After fixed load exercise,the adaptation of low shear rate of blood viscosity and red cell deformability can improve the perfusion of microcirculation. The adaption change of hemorheology may be a mechanism of HiHiLo improving exercise ability. Acute HiHiLo cannot change hemorheology.
